Ramayana
एवं सुविहितो यज्ञो हयमेधो ऽभ्यवर्तत । लक्ष्मणेनागुप्ता च हयचर्या प्रवर्तत । ईदृशं राजसिंहस्य यज्ञप्रवरमुत्तमम् ॥ 7-92-9 ॥
Thus the well-arranged horse-sacrifice proceeded; and the roaming of the horse, guarded by Lakshmana, went forward — such was the supreme and excellent foremost sacrifice of that lion among kings.
english translation